CN202845761U - Novel tundish for highly purified liquid steel - Google Patents
Novel tundish for highly purified liquid steel Download PDFInfo
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- CN202845761U CN202845761U CN 201220473933 CN201220473933U CN202845761U CN 202845761 U CN202845761 U CN 202845761U CN 201220473933 CN201220473933 CN 201220473933 CN 201220473933 U CN201220473933 U CN 201220473933U CN 202845761 U CN202845761 U CN 202845761U
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- tundish
- liquid steel
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Abstract
The utility model provides a novel tundish for highly purifying liquid steel and belongs to the technical filed of steelmaking. The novel tundish for the highly purifying liquid steel comprises a tundish container, a ladle long nozzle, a turbulence inhibitor, retaining walls, retaining dams, a tundish collecting nozzle and a reverse filter which is arranged between the retaining walls and the retaining dams. The novel tundish for the highly purifying liquid steel has the advantages that due to the arrangement of the turbulence inhibitor, scouring and eroding caused by ladle steel flow on a bottom liner of an impacting section of the tundish is weakened and involving of residue of liquid steel and gas is reduced. Secondary oxidation of the liquid steel and entering of inclusion is reduced. Service life of fireproofing materials of a tundish liner is prolonged. Filtering holes are not easy to be blocked, and therefore removal effect of residue and purity of the liquid steel are greatly improved. Dwell time of the liquid steel in the tundish is prolonged and therefore full come-up and removal of residue is easy to achieve. Area occupied by a dead zone in the tundish is greatly reduced and effective use of volume of the tundish is improved.
Description
Technical field
The utility model belongs to field of steel-making, relates to the novel tundish of a kind of high purification molten steel.
Background technology
As the transitional container that connects between ladle and the crystallizer, the continuous casting tundish has now developed into the metallurgical device with refining function, it is the key that guarantees to obtain the high-quality steel, and its effect is even molten steel component and temperature, prevents secondary oxidation, promotes inclusion floating removal, microalloying etc.But along with the user is more and more higher to the requirement of final steel iron product quality, the size of steel inclusion, quantity and distribution should obtain strict control.Simultaneously, the steel quality from tundish immersed nozzle inflow crystallizer directly has influence on the quality of strand, and therefore, the molten steel that flows in the crystallizer must have the requirement that high cleanliness factor just can meet production.The following shortcoming of tundish ubiquity of using in the actual production: wrap greatly washing away and corrode seriously of bottom, beam impact district cylinder-packing, easily impact zone bottom refractory material is involved in molten steel, cause secondary pollution; Simultaneously, wrap greatly beam and be involved in easily covering slag and gas, increase the weight of the secondary oxidation of molten steel; The tundish internal filter goes the effect that is mingled with undesirable, in long-term use procedure, the inclusion particle of the easy enriched of filter through hole causes the filter through hole blocked easily, the effect of filter removal of inclusions will reduce greatly, thereby affect normally carrying out of producing.In order to guarantee the quality of final metallurgic product, must weaken impact that large bag beam smelts tundish and in tundish as much as possible with the inclusion removal in the molten steel.
The utility model content
The purpose of this utility model is to provide a kind of high purification molten steel novel tundish, solves above-mentioned technical problem.
To achieve these goals, the technical solution of the utility model is:
The novel tundish of a kind of high purification molten steel, it is characterized in that, comprise the tundish container, large bag long nozzle, turbulent flow suppressor, left barricade, left gear dam, right barricade and right gear dam are installed respectively in the left and right sides of turbulent flow suppressor, the two ends, the left and right sides of container arrange respectively tundish lower nozzle, simultaneously, left side reverse filtration device is installed between left barricade and left gear dam, right side reverse filtration device is installed between right barricade and the right gear dam, some left sides filter bores that evenly distributes on the reverse filtration device of left side, some right sides filter bores evenly distributes on the reverse filtration device of right side.
Described turbulent flow suppressor is arranged on tundish import beam impact zone bottom.
Described turbulent flow suppressor bottom and firm connection the at the bottom of the tundish bag are to strengthen its stability.
Described left side reverse filtration device one end is embedded on the left barricade, and the other end is embedded on the left gear dam, and right side reverse filtration device one end is embedded on the right barricade, and the other end is embedded on the right gear dam, makes it be difficult for being washed out by molten steel, has strengthened the fastness of filter.
Described reverse filtration equipment material density is far below the density of molten steel.
Described filter bores be shaped as manhole.
The size of described filter bores is determined according to the actual smelting requirements of tundish.
Superior part of the present utility model is:
1) setting of turbulent flow suppressor has weakened large bag beam to the washing away and corrode of tundish impact area bottom cylinder-packing, and has reduced the slag of molten steel and being involved in of gas;
2) reduced the introducing of secondary oxidation and the field trash of molten steel;
3) service life of prolongation tundish cylinder-packing refractory material;
4) setting of reverse filtration device makes the inclusion particle Automatic-falling under action of gravitation that adheres to the filter lower surface, and filter bores is difficult for blocked, has significantly improved the effect of tundish removal of inclusions and the cleanliness factor of molten steel;
5) flow regime of molten steel is steady in the tundish, and simultaneously, the setting of reverse filtration device has prolonged the time of staying of molten steel in tundish, and the abundant come-up that is conducive to field trash is removed;
6) the shared volume in dead band reduces greatly in the tundish, has improved effective utilization ratio of tundish volume;
7) since reverse filtration equipment material density far below molten steel density, when the reverse filtration device is unexpected broken, fragment can be in molten steel floating upward quickly, avoided the secondary pollution of molten steel, improve the reliability of tundish work.
Description of drawings
Below in conjunction with accompanying drawing technical solutions of the utility model are described further:
Fig. 1: the high purification molten steel is with novel tundish structure schematic diagram.
Fig. 2: the top view of reverse filtration device.
Fig. 3: the top view of turbulent flow suppressor.
Wherein: 1-tundish container, the large bag long nozzle of 2-, the left barricade of 3-, the right barricade of 4-, 5-left side reverse filtration device, 6-right side reverse filtration device, 7-left side filter bores, 8-right side filter bores, the left gear of 9-dam, the right gear of 10-dam, 11-turbulent flow suppressor
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, the novel tundish of a kind of high purification molten steel, comprise tundish container 1, large bag long nozzle 2, turbulent flow suppressor 11, left barricade 3 is installed respectively in the left and right sides of turbulent flow suppressor 11, left gear dam 9, right barricade 4 and right gear dam 10, the two ends, the left and right sides of container arrange respectively tundish lower nozzle, simultaneously, left side reverse filtration device 5 is installed between left barricade 3 and left gear dam 9, right side reverse filtration device 6 is installed between right barricade 4 and the right gear dam 10, the some left sides filter bores 7 that evenly distributes on the left side reverse filtration device 5, some right sides filter bores 8 evenly distributes on the right side reverse filtration device 6.
When beginning to pour into a mould, molten steel is at first entered in the turbulent flow suppressor 11 in the tundish container 1 by large bag long nozzle 2, and then through left side reverse filtration device 5 and right side reverse filtration device 6 between barricade and the gear dam, the mouth of a river flows into crystallizer under the tundish two ends at last.In the said process, turbulent flow suppressor 11 will weaken the kinetic energy of tundish import department molten steel greatly, weaken large bag beam washing away and corroding tundish impact area bottom cylinder-packing.Steady from the steel liquid flow state of turbulent flow suppressor 11 interior outflows, when it flows through left side reverse filtration device 5 and right side reverse filtration device 6, inclusion particle in the molten steel will be caught by left side filter bores 7 and right side filter bores 8, simultaneously, adhere to inclusion particle Automatic-falling under action of gravitation of left side reverse filtration device 5 and right side reverse filtration device 6 lower surfaces, so that left side filter bores 7 and right side filter bores 8 are difficult for is blocked, the effect of tundish removal of inclusions and the cleanliness factor of molten steel have been significantly improved.The molten steel that flows through left side reverse filtration device 5 and right side reverse filtration device 6 will be along tundish upper surface Flow Structure Nearby, the glide path of molten steel in tundish increases, prolonged the time of staying of molten steel in tundish, the abundant come-up that is conducive to field trash, the cleanliness factor of molten steel is further enhanced, and the quality of final products also is guaranteed.Because the mobile folding corner region through tundish of molten steel in tundish reduced the shared volume in dead band, improved effective utilization ratio of tundish volume.
Claims (6)
1. novel tundish of high purification molten steel, it is characterized in that, comprise tundish container (1), large bag long nozzle (2), turbulent flow suppressor (11), left barricade (3) is installed respectively in the left and right sides of turbulent flow suppressor (11), left gear dam (9), right barricade (4) and right gear dam (10), the two ends, the left and right sides of tundish container arrange respectively tundish lower nozzle, simultaneously, left side reverse filtration device (5) is installed between left barricade (3) and left gear dam (9), right side reverse filtration device (6) is installed between right barricade (4) and the right gear dam (10), the upper some left sides filter bores (7) that evenly distribute of left side reverse filtration device (5), the upper some right sides filter bores (8) that evenly distribute of right side reverse filtration device (6).
2. the novel tundish of a kind of high purification molten steel as claimed in claim 1 is characterized in that, turbulent flow suppressor (11) is arranged on tundish import beam impact zone bottom.
3. the novel tundish of a kind of high purification molten steel as claimed in claim 1 or 2 is characterized in that, turbulent flow suppressor (11) bottom and firm connection the at the bottom of the tundish bag.
4. the novel tundish of a kind of high purification molten steel as claimed in claim 1 is characterized in that, reverse filtration device (5) one ends in left side are embedded on the left barricade (3), and the other end is embedded on the left gear dam (9).
5. the novel tundish of a kind of high purification molten steel as claimed in claim 1 is characterized in that, reverse filtration device (6) one ends in right side are embedded on the right barricade (4), and the other end is embedded on the right gear dam (10).
6. the novel tundish of a kind of high purification molten steel as claimed in claim 1 is characterized in that, described filter bores be shaped as manhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473933 CN202845761U (en) | 2012-09-17 | 2012-09-17 | Novel tundish for highly purified liquid steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220473933 CN202845761U (en) | 2012-09-17 | 2012-09-17 | Novel tundish for highly purified liquid steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202845761U true CN202845761U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220473933 Expired - Fee Related CN202845761U (en) | 2012-09-17 | 2012-09-17 | Novel tundish for highly purified liquid steel |
Country Status (1)
| Country | Link |
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| CN (1) | CN202845761U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104057044A (en) * | 2014-06-06 | 2014-09-24 | 武汉科技大学 | Internal rotation type turbulence controller for continuous casting tundish |
| CN104226936A (en) * | 2013-06-19 | 2014-12-24 | 鞍钢股份有限公司 | Device and method for purifying molten steel in tundishes |
| CN104439136A (en) * | 2014-12-17 | 2015-03-25 | 谢玉红 | Impurity filtering and absorbing flow divider for tundish |
| CN105921735A (en) * | 2016-06-15 | 2016-09-07 | 江苏华能冶金工程技术有限公司 | Tundish gettering filter |
| WO2019184647A1 (en) * | 2018-03-30 | 2019-10-03 | 宝山钢铁股份有限公司 | Flow-controllable tundish structure capable of filtering inclusions in molten steel |
| CN110328356A (en) * | 2019-08-28 | 2019-10-15 | 庄小梅 | A kind of dry materials liner in dundish of reserved weir plate slot is with releasing the explosion-proof pipe mold of slag |
| CN110834085A (en) * | 2019-12-18 | 2020-02-25 | 新疆八一钢铁股份有限公司 | Tundish turbulence suppressor for suppressing short-circuit flow |
| CN111715874A (en) * | 2020-06-18 | 2020-09-29 | 河北工业职业技术学院 | Filter type continuous casting long nozzle |
| CN114799150A (en) * | 2022-04-24 | 2022-07-29 | 湖南华菱涟源钢铁有限公司 | Wave suppression method for continuous casting of square billets |
| CN114888270A (en) * | 2022-05-09 | 2022-08-12 | 湖南华菱涟源钢铁有限公司 | Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method |
| WO2023185874A1 (en) * | 2022-03-28 | 2023-10-05 | 宝山钢铁股份有限公司 | Method and apparatus for reducing fine inclusions in molten steel |
-
2012
- 2012-09-17 CN CN 201220473933 patent/CN202845761U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226936A (en) * | 2013-06-19 | 2014-12-24 | 鞍钢股份有限公司 | Device and method for purifying molten steel in tundishes |
| CN104057044A (en) * | 2014-06-06 | 2014-09-24 | 武汉科技大学 | Internal rotation type turbulence controller for continuous casting tundish |
| CN104439136A (en) * | 2014-12-17 | 2015-03-25 | 谢玉红 | Impurity filtering and absorbing flow divider for tundish |
| CN105921735A (en) * | 2016-06-15 | 2016-09-07 | 江苏华能冶金工程技术有限公司 | Tundish gettering filter |
| US11273488B2 (en) | 2018-03-30 | 2022-03-15 | Baoshan Iron & Steel Co., Ltd. | Flow-controllable tundish structure capable of filtering inclusions in molten steel |
| CN110315060A (en) * | 2018-03-30 | 2019-10-11 | 宝山钢铁股份有限公司 | A kind of flow control formula tundish structure may filter that the field trash in molten steel |
| WO2019184647A1 (en) * | 2018-03-30 | 2019-10-03 | 宝山钢铁股份有限公司 | Flow-controllable tundish structure capable of filtering inclusions in molten steel |
| CN110328356A (en) * | 2019-08-28 | 2019-10-15 | 庄小梅 | A kind of dry materials liner in dundish of reserved weir plate slot is with releasing the explosion-proof pipe mold of slag |
| CN110834085A (en) * | 2019-12-18 | 2020-02-25 | 新疆八一钢铁股份有限公司 | Tundish turbulence suppressor for suppressing short-circuit flow |
| CN111715874A (en) * | 2020-06-18 | 2020-09-29 | 河北工业职业技术学院 | Filter type continuous casting long nozzle |
| WO2023185874A1 (en) * | 2022-03-28 | 2023-10-05 | 宝山钢铁股份有限公司 | Method and apparatus for reducing fine inclusions in molten steel |
| CN114799150A (en) * | 2022-04-24 | 2022-07-29 | 湖南华菱涟源钢铁有限公司 | Wave suppression method for continuous casting of square billets |
| CN114888270A (en) * | 2022-05-09 | 2022-08-12 | 湖南华菱涟源钢铁有限公司 | Slab continuous casting high-pulling-speed reverse inclined hole type wave suppression method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20140917 |
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| EXPY | Termination of patent right or utility model |